(7) Iris |
ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
Opposition | 30 Apr 2023 | 9.6 | 2.931 AU | 1.927 AU | 14h22m | -19°50' | 174.6° | 1.9° |
Today | 2 Jun 2023 | 10.3 | 2.935 AU | 2.070 AU | 13h56m | -16°39' | 141.9° | 12.3° |
(7) Iris - 2023-06-02
astro.vanbuitenen.nl
The interactive orbit chart above shows the body's path through the solar system and its position at the given date.
Green and blue lines are shown perpendicular to the ecliptic plane: Green if the path is above the ecliptic plane, blue if it is below.
(Left-click and drag to rotate the view; Right-click and drag to move the view; Use scroll wheel to zoom in our out.)
The orbital elements of Iris are:
e (Eccentricity) : 0.2296597
a (Semimajor axis) : 2.3869503
i (Inclination) : 5.51780
Ω (Longitude of ascending node) : 259.50441
ω (Argument of perihelion) : 145.41270
M (Mean anomaly) : 154.48050
Epoch : 2023 Feb 25
L (Longitude of perihelion) : 225.04137
B (Latitude of perihelion) : 3.12896
P (Orbital period in years) : 3.69
The light curve chart below shows the estimated development of the minor planet's magnitude.
The all-sky chart below shows the path of the minor planet over the same period as the light curve. The current position is marked yellow.
The following chart shows the path of the minor planet in the next few days. The field of view is optimized for (~10x50) binoculars and finderscopes.
A more printer-friendly version of the same chart can be found below.
Ephemerides:
Date Time RA (2000) DEC (2000) delta radius elong phase PA magn
2023-06-02 00:00 UT 13 56 59.3 -16 39 53 2.070 2.935 141.9 12.3 105 10.3
2023-06-02 22:33 UT 13 56 33.2 -16 35 18 2.078 2.935 140.9 12.6 105 10.3
2023-06-03 00:00 UT 13 56 31.5 -16 35 01 2.078 2.935 140.8 12.6 105 10.3
2023-06-04 00:00 UT 13 56 05.1 -16 30 15 2.087 2.935 139.7 12.9 105 10.3
2023-06-05 00:00 UT 13 55 40.1 -16 25 37 2.096 2.935 138.7 13.2 106 10.4
2023-06-06 00:00 UT 13 55 16.6 -16 21 05 2.105 2.935 137.6 13.5 106 10.4
2023-06-07 00:00 UT 13 54 54.4 -16 16 40 2.114 2.935 136.6 13.8 106 10.4
2023-06-08 00:00 UT 13 54 33.7 -16 12 23 2.123 2.935 135.5 14.0 106 10.4
2023-06-09 00:00 UT 13 54 14.4 -16 08 12 2.133 2.935 134.5 14.3 106 10.4
2023-06-10 00:00 UT 13 53 56.5 -16 04 10 2.143 2.935 133.4 14.5 107 10.5
2023-06-11 00:00 UT 13 53 40.1 -16 00 14 2.153 2.935 132.4 14.8 107 10.5
2023-06-12 00:00 UT 13 53 25.2 -15 56 27 2.163 2.935 131.4 15.1 107 10.5
2023-06-13 00:00 UT 13 53 11.6 -15 52 47 2.173 2.935 130.3 15.3 107 10.5
2023-06-14 00:00 UT 13 52 59.5 -15 49 15 2.184 2.934 129.3 15.5 107 10.5
2023-06-15 00:00 UT 13 52 48.9 -15 45 51 2.194 2.934 128.3 15.8 107 10.5
2023-06-16 00:00 UT 13 52 39.7 -15 42 35 2.205 2.934 127.3 16.0 108 10.6
2023-06-17 00:00 UT 13 52 32.0 -15 39 27 2.216 2.934 126.3 16.2 108 10.6
2023-06-18 00:00 UT 13 52 25.7 -15 36 27 2.227 2.934 125.3 16.4 108 10.6
2023-06-19 00:00 UT 13 52 20.8 -15 33 36 2.238 2.934 124.3 16.6 108 10.6
2023-06-20 00:00 UT 13 52 17.3 -15 30 52 2.249 2.934 123.4 16.8 108 10.6
2023-06-21 00:00 UT 13 52 15.3 -15 28 17 2.261 2.933 122.4 17.0 108 10.7
2023-06-22 00:00 UT 13 52 14.7 -15 25 50 2.272 2.933 121.4 17.2 108 10.7
2023-06-23 00:00 UT 13 52 15.5 -15 23 31 2.284 2.933 120.5 17.4 108 10.7
2023-06-24 00:00 UT 13 52 17.7 -15 21 20 2.296 2.933 119.5 17.6 109 10.7
2023-06-25 00:00 UT 13 52 21.2 -15 19 18 2.308 2.933 118.6 17.7 109 10.7
2023-06-26 00:00 UT 13 52 26.1 -15 17 24 2.320 2.933 117.6 17.9 109 10.7
2023-06-27 00:00 UT 13 52 32.4 -15 15 38 2.332 2.932 116.7 18.0 109 10.8
2023-06-28 00:00 UT 13 52 40.1 -15 13 60 2.344 2.932 115.7 18.2 109 10.8
2023-06-29 00:00 UT 13 52 49.1 -15 12 29 2.356 2.932 114.8 18.3 109 10.8
2023-06-30 00:00 UT 13 52 59.4 -15 11 07 2.369 2.932 113.9 18.5 109 10.8
2023-07-01 00:00 UT 13 53 11.0 -15 09 53 2.381 2.931 113.0 18.6 109 10.8
2023-07-02 00:00 UT 13 53 23.8 -15 08 47 2.394 2.931 112.1 18.7 109 10.8
Terminology:
delta: distance between minor planet and earth in AU
radius: distance between minor planet and sun in AU
magn: magnitude (brightness) estimate
ra: right ascension in hours (24h = 360deg)
dec: declination in degrees
elong: elongation in degrees (angle sun-earth-minor planet)
phase: phase angle in degrees (angle sun-minor planet-earth)
AU: Astronomical Unit (mean distance between earth and sun: 149597870.7 km
Orbital elements provided by the MPC (Minor Planet Center).
Calculations by a modified version of AAPlus, a C# implementation of the AA+ project by PJ Naughter from the algorithms presented in the book "Astronomical Algorithms" by Jean Meeus.
NGC2000 dso catalog and star labels from VizieR as provided by the Strasbourg astronomical Data Center.
Tycho2 catalog from the ESO archive.